Node.js 中的重要API：HTTP

2019-12-16

21:04:14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

require('http').createServer(function (req, res) {
  res.writeHead(200);
  res.end('Hello World');
}).listen(3000);

 

require('http').createServer(function (req, res) {
  res.writeHead(200,{'Content-Type':'text/html'});
  res.end('Hello <b>World</b>');
}).listen(3000);

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

require('http').createServer(function (req, res) {
  res.writeHead(200, { 'Content-Type': 'text/html' });
  res.end([
      '<form method="POST" action="/url">'
    ,   '<h1>My form</h1>'
    ,   '<fieldset>'
    ,   '<label>Personal information</label>'
    ,   '<p>What is your name?</p>'
    ,   '<input type="text" name="name">'
    ,   '<p><button>Submit</button></p>'
    , '</form>'
  ].join(''));
}).listen(3000);

 

 

 

 

 

 

 

 

 

 

 

 

 

 

require('http').createServer(function (req, res) {
  if ('/' == req.url) {
    res.writeHead(200, { 'Content-Type': 'text/html' });
    res.end([
        '<form method="POST" action="/url">'
      ,   '<h1>My form</h1>'
      ,   '<fieldset>'
      ,   '<label>Personal information</label>'
      ,   '<p>What is your name?</p>'
      ,   '<input type="text" name="name">'
      ,   '<p><button>Submit</button></p>'
      , '</form>'
    ].join(''));
  } else if ('/url' == req.url && 'POST' == req.method) {
    var body = '';

    req.on('data', function (chunk) {
      body += chunk;
    });

    req.on('end', function () {
      res.writeHead(200, { 'Content-Type': 'text/html' });
      res.end('<p>Content-Type: ' + req.headers['content-type'] + '</p>'
        + '<p>Data:</p><pre>' + body + '</pre>');
    });
  }
}).listen(3000);

 

 

 

 

 client.js

require('http').request({ host: '127.0.0.1', port: 3000, url: '/', method: 'GET' }, function (res) {
  var body = '';
  res.setEncoding('utf8');
  res.on('data', function (chunk) {
    body += chunk;
  });
  res.on('end', function () {
    console.log('\n  We got: \033[96m' + body + '\033[39m\n');
  });
}).end();

server.js

require('http').createServer(function (req, res) {
  res.writeHead(200);
  res.end('Hello World');
}).listen(3000);

 

 

server.js

var qs = require('querystring');

require('http').createServer(function (req, res) {
  var body = '';

  req.on('data', function (chunk) {
    body += chunk;
  });

  req.on('end', function () {
    res.writeHead(200);
    res.end('Done');

    console.log('\n  got name \033[90m' + qs.parse(body).name + '\033[39m\n');
  });
}).listen(3000);

client.js

var http = require('http')
  , qs = require('querystring')

function send (theName) {
  http.request({ host: '127.0.0.1', port: 3000, url: '/', method: 'POST' }, function (res) {
    res.setEncoding('utf8');
    res.on('end', function () {
      console.log('\n  \033[90m✔ request complete!\033[39m');
      process.stdout.write('\n  your name: ');
    });
  }).end(qs.stringify({ name: theName }));
}

process.stdout.write('\n  your name: ');
process.stdin.resume();
process.stdin.setEncoding('utf-8');
process.stdin.on('data', function (name) {
  send(name.replace('\n', ''));
});